Military black ops patches

Clockwise from top left: Ghost Squadron. For search and rescue; National Reconnaissance Office. Dragon is code for infrared imaging on advanced KH-11 satellites; Desert Prowler. May represent Groom Lake, Nev., a k a Area 51; Special Projects Office. Oversaw F-117A stealth fighter support; 4451st Test Squadron. Stealth fighters; 413th Flight Test Squadron. Possibly referring to simulated or real electronic threats against aircraft